White-Rodgers 1131-102 Well Immersion Single Control

White-Rodgers 1131-102 Well Immersion Single Control is a precision temperature control designed for hydronic systems. This well immersion unit uses an SPDT switch for reliable on/off signaling and supports a 100 to 240°F temperature range to match diverse heating needs.

With a compact 2-9/16 inch depth and a 5-3/8 inch height, it fits standard installations, while handling up to 7.4 amps at 120V AC (3.7 amps at 240V AC). The gray finish complements most equipment enclosures, and the 2-15/16 inch coil size provides responsive sensing for steady heat control. Designed for reliability, it supports 120/240 VAC input and is built to UL and CSA standards for safety and durability. It handles water as the media and includes a tapered bulb, standard shank well, and heat-conductive compound for fast temperature response.

Ideal for boiler controls, radiant heating, and hot water systems.

• Voltage and current: 120/240 VAC input; 7.4 A at 120V and 3.7 A at 240V.
• Temperature range: 100–240°F for flexible heating control.
• Media handled: Water, suitable for hydronic systems.
• Switch type: SPDT for reliable on/off switching.
• Dimensions: 2-9/16" depth x 5-3/8" height.
• Coil size: 2-15/16"; Finish: Gray.
• Included components: 2-7/16" x 7/16" tapered bulb; 1/2" shank well; F145-0163 heat-conductive compound.
• Standards: UL and CSA compliant.
• Applications: Hydronic boiler controls, radiant heating, and hot water systems.